<!DOCTYPE html>
<html>
	<head>
		
		<title></title>
	</head>
	<body>
		
		<table border="1" width="300" height="350" align="center">
			<tr>
				<td colspan="4" >●●● </td>
				
			</tr>
			<tr>
				<td colspan="4" >&nbsp;</td>
				
			</tr>
			<tr>
				<td width="25%" align="center">AC</td>
				<td width="25%" align="center">+/-</td>
				<td width="25%" align="center">%</td>
				<td width="25%" align="center">/</td>
			</tr>
			<tr align="center">
				<td>7</td>
				<td>8</td>
				<td>9</td>
				<td>*</td>
			</tr>
			<tr align="center">
				<td>4</td>
				<td>5</td>
				<td>6</td>
				<td>-</td>
			</tr>
			<tr align="center">
				<td>1</td>
				<td>2</td>
				<td>3</td>
				<td>+</td>
			</tr>
			<tr align="center">
				<td>0</td>
				<td>删除</td>
				<td>.</td>
				<td>=</td>
			</tr>
		</table>
	</body>
</html>